Hi-GAL, the Herschel infrared Galactic Plane Survey: photometric maps and compact source catalogues First data release for the inner Milky Way:+68° ≥ l ≥-70°

被引：170

作者：

Molinari, S. ^{[1
]}

Schisano, E. ^{[1
]}

Elia, D. ^{[1
]}

Pestalozzi, M. ^{[1
]}

Traficante, A. ^{[2
]}

Pezzuto, S. ^{[1
]}

Swinyard, B. M. ^{[3
]}

Noriega-Crespo, A. ^{[4
]}

Bally, J. ^{[5
]}

Moore, T. J. T. ^{[6
]}

Plume, R. ^{[7
]}

Zavagno, A. ^{[8
]}

di Giorgio, A. M. ^{[1
]}

Liu, S. J. ^{[1
]}

Pilbratt, G. L. ^{[9
]}

Mottram, J. C. ^{[10
]}

Russeil, D. ^{[8
]}

Piazzo, L. ^{[11
]}

Veneziani, M. ^{[12
]}

Benedettini, M. ^{[1
]}

Calzoletti, L. ^{[13
,14
]}

Faustini, F. ^{[14
]}

Natoli, P. ^{[15
,16
]}

Piacentini, F. ^{[17
]}

Merello, M. ^{[1
]}

Palmese, A. ^{[1
,13
]}

Del Grande, R. ^{[1
]}

Polychroni, D. ^{[18
]}

Ryg, K. L. J. ^{[19
]}

Polenta, G. ^{[14
]}

Barlow, M. J. ^{[20
]}

Bernard, J. -P. ^{[21
,22
,23
]}

Martin, P. G. ^{[24
]}

Testi, L. ^{[25
,26
]}

Ali, B. ^{[27
]}

Andre, P. ^{[28
]}

Beltran, M. T. ^{[26
]}

Billot, N. ^{[29
]}

Carey, S. ^{[30
]}

Cesaroni, R. ^{[26
]}

Compiegne, M. ^{[31
]}

Eden, D. ^{[32
]}

Fukui, Y. ^{[33
]}

Garcia-Lario, P. ^{[13
]}

Hoare, M. G. ^{[34
]}

Huang, M. ^{[35
]}

Joncas, G. ^{[36
]}

Lim, T. L. ^{[3
,13
]}

Lord, . D. ^{[37
]}

Martinavarro-Armengol, S. ^{[20
]}

机构：

[1] INAF Ist Astrofis & Planetol Spaziale, Via Fosso Cavaliere 100, I-00133 Rome, Italy

[2] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England

[3] STFC, Rutherford Appleton Labs, Didcot OX11QX, Oxon, England

[4] Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA

[5] Univ Colorado, Dept Astrophys & Planetary Sci, CASA, Boulder, CO 80309 USA

[6] Liverpool John Moores Univ, Astrophys Res Inst, Ic2 Liverpool Sci Pk,146 Brownlow Hill, Liverpool L3 5RF, Merseyside, England

[7] Univ Calgary, Dept Phys & Astron, Calgary ABT2N 1N4, AB, Canada

[8] Univ Provence, LAM, F-13013 Marseille, France

[9] European Space Res & Technol Ctr ESTEC SCI S, ESA, Directorate Sci, Sci Support Off, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands

[10] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands

[11] Univ Roma La Sapienza, DIET, I-00185 Rome, Italy

[12] CALTECH, Infrared Proc Anal Ctr, Pasadena, CA 91125 USA

[13] ESA ESAC, Herschel Sci Ctr, POB 78, Madrid 28691, Spain

[14] ASI Sci Data Ctr, I-00044 Frascati, Italy

[15] Univ Ferrara, Dipartimento Fis & Sci Terra, Via Saragat 1, I-44100 Ferrara, Italy

[16] Sez INFN Ferrara, Via Saragat 1, I-44100 Ferrara, Italy

[17] Univ Roma La Sapienza, Dipartimento Fis, Ple Aldo Moro 2, I-00138 Rome, Italy

[18] Univ Atacama, Dept Fis, Copiapo, Chile

[19] INAF Ist Radioastron, Via P Gobetti 101, I-40129 Bologna, Italy

[20] UCL, Dept Phys & Astron, London WC1E 6BT, England

[21] Univ Toulouse, CESR, UPS, Toulouse, France

[22] CNRS, UMR5187, Toulouse, France

[23] CNRS, IRAP, 9 Ave Colonel Roche,BP 44346, F-31028 Toulouse 4, France

[24] Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S, Canada

[25] European So Observ, Karl Schwarzschild Str 2, Garching, Germany

[26] INAF Osservatorio Astrofis Arcetri, Florence, Italy

[27] Space Sci Inst, Boulder, CO USA

[28] Univ Paris Diderot, Laboratoire AIM, CNRS, CEA,DSM,INSU,IRFU,SAp,CEA Saclay, F-91191 Gif Sur Yvette, France

[29] IRAM, Granada, Spain

[30] CALTECH, Spitzer Sci Ctr, Pasadena, CA 9125 USA

[31] HYGEOS, Euratechnol, 165 Ave Bretagne, F-59000 Lille, France

[32] Univ Strasbourg, CNRS, UMR 7550, 11 Rue Univ, F-67000 Strasbourg, France

[33] Nagoya Univ, Dept Astrophys, Nagoya, Aichi 4648601, Japan

[34] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

[35] Chinese Acad Sci, Natl Astron Observ, Beijing 100864, Peoples R China

[36] Univ Laval, Dept Phys, Quebec City, PQ G1V OA6, Canada

[37] SETI Inst, 189 Bernardo Ave Suite 100, Mountain View, CA 94043 USA

[38] Cardiff Univ, Sch Phys & Astron, Cardiff CF10 3AX, S Glam, Wales

[39] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany

[40] Univ Cologne, Phys Inst, Zulpicher Str 77, D-50937 Cologne, Germany

[41] Univ Bordeaux, CNRS, LAB, UMR 5804, F-33270 Floirac, France

[42] SRON Netherlands Inst Space Res, Zernike Bldg,POB 800, NL-9700 AV Groningen, Netherlands

[43] Univ Salento, Dipartimento Matemat & Fis, Lecce, Italy

[44] Univ Hertfordshire, Sci & Technol Res Inst, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England

[45] INAF Osservatorio Astrofis Catania, Catania, Italy

[46] Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England

[47] Max Planck Inst Radioastron MPIfR, D-53121 Bonn, Germany

来源：

ASTRONOMY & ASTROPHYSICS | 2016年 / 591卷

关键词：

dust; extinction; infrared: ISM; stars: formation; Galaxy: disk; methods: data analysis; techniques: photometric; STAR-FORMATION; DIFFUSE EMISSION; MOLECULAR CLOUDS; CO SURVEY; DUST; FILAMENTS; GALAXIES; CALIBRATION; ATLASGAL; SYSTEM;

D O I：

10.1051/0004-6361/201526380

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Aims. We present the first public release of high-quality data products (DR1) from Hi-GAL, the Herschel infrared Galactic Plane Survey. Hi-GAL is the keystone of a suite of continuum Galactic plane surveys from the near-IR to the radio and covers five wavebands at 70, 160, 250, 350 and 500 mu m, encompassing the peak of the spectral energy distribution of cold dust for 8 less than or similar to T less than or similar to 50 K. This first Hi-GAL data release covers the inner Milky Way in the longitude range 68 degrees greater than or similar to l greater than or similar to -70 degrees in a vertical bar b vertical bar <= 1 degrees latitude strip. Methods. Photometric maps have been produced with the ROMAGAL pipeline, which optimally capitalizes on the excellent sensitivity and stability of the bolometer arrays of the Herschel PACS and SPIRE photometric cameras. It delivers images of exquisite quality and dynamical range, absolutely calibrated with Planck and IRAS, and recovers extended emission at all wavelengths and all spatial scales, from the point-spread function to the size of an entire 2 degrees x 2 degrees "tile" that is the unit observing block of the survey. The compact source catalogues were generated with the CuTEx algorithm, which was specifically developed to optimise source detection and extraction in the extreme conditions of intense and spatially varying background that are found in the Galactic plane in the thermal infrared. Results. Hi-GAL DR1 images are cirrus noise limited and reach the 1 sigma-rms predicted by the Herschel Time Estimators for parallel-mode observations at 60 '' s(-1) scanning speed in relatively low cirrus emission regions. Hi-GAL DR1 images will be accessible through a dedicated web-based image cutout service. The DR1 Compact Source Catalogues are delivered as single-band photometric lists containing, in addition to source position, peak, and integrated flux and source sizes, a variety of parameters useful to assess the quality and reliability of the extracted sources. Caveats and hints to help in this assessment are provided. Flux completeness limits in all bands are determined from extensive synthetic source experiments and greatly depend on the specific line of sight along the Galactic plane because the background strongly varies as a function of Galactic longitude. Hi-GAL DR1 catalogues contain 123210, 308509, 280685, 160972, and 85460 compact sources in the five bands.

引用

页数：33

共 4 条

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